<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
    <style>
        *{
            margin: 0;
            padding: 0;
        }
        .top{
            width: 1530px;
            height: 100px;
        }
        .left{
            width: 30%;
            height:605px
        }
        .right{
            width: 69%;
            height: 605px
        }
    </style>
</head>
<body>
<div id="app">
    <div>
        <iframe src="top.html" class="top"></iframe>
    </div>
    <div>
        <iframe src="left.html" class="left"></iframe>
        <iframe src="right.html" class="right"></iframe>
    </div>
</div>
</body>
</html>